The applications of aerodynamics particularly in rocket technology and modern high-speed aviation are studied along with the general laws of motion of a gas medium. The first six chapters of the book cover the following: basic concepts and definition of aerodynamics, kinematics of a fluid medium, equations of motion of a gas in the general case (where variations in its physico-chemical properties are considered), the theory of shock waves, the method of characteristics (very widely used in the investigation of supersonic flows), and the general theory of the motion of a gas in two-dimensional space. The practical applications or connections with the formulation of methods of aerodynamic calculations for flight vehicles and their individual elements are shown.